Computing device



A. H. c. HonNBosTEL.

COMPUTING DEVICE. APPucATioN FILED 1uNE28. |920.

2 ill mw .u j 11 m 4 Ulli:

A.. H. C. HOHNBOSTEL.

COMPUTING DEVICE. APPLICATION FILED IUNEZBI I920l www A. H l C. HORNBGSTEL.

coMPunNG'nEvlcE.

APPLICATION FILED JUNE 284. 1920.

1,41 1,357, Patented Apr. 4, 1922.

4 SHEETS-SHEET 3.

A-. H. C. HORNBOSTEL.

COMPUTING oEvlcE.

APPLICATION FILEDl JUNE 28, i920. 1,141 1,357, l Patented Apr. 4,1922.

4 SHEETS-SHEET 4.

oNrrI-:D STATES i PATENT OFFICE.

niioLrHH; cyHoRNBosTEL, or DESHLEE, NEEEASKA, ASSIGNOE or ONE-FIFTH fro EICHAEE W. EODENEUEG, ONE-EIETH To EDWARD A. EODENEUEG, oNEEIETH To f Heeor. EAEssLER, ANnoNE-EIETH To JOHN E. Eme-estrie,` or ioEsHLER, NE-

BRASKA. i

Application vfiled June 28,

- tain new and useful Improvements in Comlo A' puting-Deviees7 of which the following is a specification, reference being had to the accompanying drawings. f Y

This invention. relates to certain improvementsl in computing devices' and `itis primarily an object ofthe invention to provide a novel and improved device of this general character which can be employed with convenience and facility 'to compute the interest due within a given period of time upon a given sum of money at a certain rate of .interest orper cent.

lt is also an object ofthe invention to provide a novel. and improved device of this general character comprising a plurality of members rotatablev-about substantially a common axis and wherein the peripheries of said membersl are' provided with coaeting indicia to effect the requisite computation.

.Another object oft-he invention is to provide agnovel andv improved device of this general character. comprising a` plurality of relatively: rotatable members, together .with

.means .vhereby said members may be kcaused kto rotate in 'unisonor separatelyfin Aaccordance with the requirements .ofrpraetice lhirthermore', it is an objectief the invention to provide a noveland` improveddevice Aof this .gene-ralcharaeter including a plu-V rality of members rotating about` ajeommon axis, together Vwith means kwhereby said members,normally arel adapted :for unitary rotation, together' with means for releasing one `of said members for rotation independ-l ently of the other. y v

The invention` also has vfor an object to irovide a novel and im. iroved device of this l l general character including a Yplurality of members supported for rotation about substantially a common axis-and which members normally rotate in unison, together with means for ylimiting such unitary rotation of themeinbers, said limit of rotation being determined by Va certain identity or character carried by Aone of the members with respect to an index member supported .in juxtaposition to the rotatable members-- j An additional objeetof the invention is Specification of Letters Patent.

COMPUTING DEVICE.

Patented Api.` 4, 1922. 1920. Serial No. 392,239.

toprovide a novel and improved `device of this general lcharacter embodyingmeans whereby indication is theyear which fall upon Sunday and which meansinay also belemployed with advantage vto indicate legal holidays.

-The invention consists in the details of construction andin the "combination and arrangement of the several parts of my improved 1 feomputing vdevice whereby certain important advantages are attained and the devieerendered simpler7 less expensiveand otherwise more convenient and advantageous for use, as will be hereinafter more lafully set'forth. Y f i i The novel features of my invention will hereinafter be vdefinitely claimed.

In order that my invention may bethe' better understood, l will now proceed to describe the same with reference to the acconr' n panying drawings, wherein:

. Figure l is avleivin elevation or a oomgiven of the days of pnting device constructed in accordance with an embodiment of my invention. f

lFigure 2 isa Alongitudinal Vvertical seetional view taken through vthe device as illustrated in Figure ly with certain of the parts in elevation. y i y igure 3ds Va transverse verticalv sectional view taken substantially on the line 3 3 of Figure 2. f

Figure l is aan enlargedfragmentary view partly in seotioirand partly in top plan of the adjustable means for limiting the rotation of the main drum in one direction. y i f Figure 5 is a vertical transverse sectional viewy taken througlrthe device at the longitudinal center thereof and looking toward i rings,l B .denotes a supporting base substantially rectangular .1n form and provided with the rupstanding 1 marginal flanges 1.

beeured to each end portion ofthe base B at substantially the transverse center thereof are the upstanding bracketsy 2 provided A at their upper ends with hearings il for the elongated tubular .sh-att 11. One end portion o.x the shalt i is .lisposed through a sleeve 5 which is disposed through one oi the bearings $5, preli'erably the hearing at the right end ot the hase l. The shaft i is also disposed axially through a drum D, the opposite end portions ot which being provided with the spiders 6, each olf which include a huh T keyed or otherwise engaged with the shailt l for rotation therewith.

The inner end portion of the sleeve 5 has keyed or otherwise ai'iixed thereto the huh 8 of a spider l). The spider 9 carries a relatively short drum D which is called the month wheel. The outer end oit the drum D provided in its periphery with a circuin 't-.reniially dispoxed rabbet 10 extending entirely therearound and in which rabbet is arranged a band 11 called the Sunday or holiday wheel. This band is capable of ii'ulependent movement ciicumiferentially oit the drum D and is held or maintained in applied position through the instrumental ity oi the dianietrically opposed screws 12 threaded within the outer end face of the drum D with the heads 12n thereof par tially overlying and contacting with the outer edge oil. said band 11.

The spider 9 includes a pair of oppositely disposed radial spokes to the inner face of each ot' which i' secured an elongated member 1t substantially U-sliaped in form. Pivotally supported at the inner end portieri oi each ol the members 14 is the heel part oi' a bell crank level' 15, one arm a of which extending toward the drum D and the second arm L extending toward the shaft 4.

Pivotally engaged with the free end portion oit the arm 7) is a rod 16 extending longitiuliiu-illy ot the adjarent member 141.. The outer end portion ot' said rod 16 is slidably disposed through an. inwardly disposed flange or lip 17 provided at the outer end of the member 11i. The outer end of the rod 16 normally has :trictional contact with the inner face o1' the peripheral wall of the adi jacent end oit the drum D so that the drums l) and D are connected for unitary rotation about a common axis.

llach oi? the rods 16 is constantly urged outwardly through the medium of a retrac tile member or spring 18 having one end portion secured to the inner end portion of the rod 16 and its opposite end portion secured to a pin 19 or the like supported by the outer extren'iities of the side iianges 14. ot the member 141- and bridging the space therebetween.

The sha-ft 4- between the hubs 7 and 8 of the spiders 6 and 9 is provided at diametrically opposed points with longitudinally directed slots 2O in communication with the bore oi the shaft 1t. Slidably mounted on. the slotted porion oi" the shaft fl is a disk 21 lWhen it is desired to rotate the drum D l independently of the drum D, the rods 16 will be brought out of clutching action on the drum D by pushing the rod 23 inwardly, resulting in the disk 21 engaging the arms oit' the bell crank lever 15 to cause the de* .sii-ed inward movement of the rods 16. When pressure is taken off of the rod 23, the rods 16 will automatically .return into clutching engagement with the drum D under the influence of the retractile members or springs 18.

While ordinarily the members or springs 18 possess sufficient tension to cause the requisite outward movement of the rod 23 when relieved of pressure, I find it of advantage to employ an expansible member or spring 24- inserted within the outer end portion oi? the sleeve 5 and interposed between the inner end of the rod 23 and a stop intersecting the bore of the sleeve 5 adjacent its outer end.

The spider 6 remote :from the drum D is provided with an annular brake flange or wheel 26 with the peripheral wall or face of which coaets the arcuate brake shoe 27, t-he workingface of which being provided with a suitable brake lining 28. The shoe 27 extends upwardly and rearwardly and the lower end portion is pivotally engaged. as at 29, with the adjacent bracket 2.

The brake shoe 2T is constantly urged into contact with the brake flange or wheel 26 by the retractile member or spring 3() anchored at one end to the bracket 2 at a. point above the shoe 27 and at its opposite end portions to the pivoted end portion ol the releasing rod 31. The inner or lower end portion oit the rod 31 is pivotally enn gaged, as at 32, within a slotted lug 33 extending outwardly and laterally from the shoe 2T at a pointsubstantially midway its length. Upon depression of the rod. 31, the shoe 2T will be moved out of engagement-or contact with the flange or wheel 26 so that the drum D may be freely rotated.

Extending outwardly from the end of the drinn D provided with the Hangs or wheel 26 is a. stop pin 311 which operates to limit the rotation of the drum D in one direction. The lower portion of the adjacent bracket 2 provided with a pair of horizontally alined bearings 35 arranged inwardly of the bracket and which rotatably support a threaded shaft 36 which is held against endwisey movement in one direction by the bushing 33T fixed to the shaft 36 and contacting with the forward bearing and against movement in the opposite direction by the holding nuts 38 or the like engaged with the shaft `36V and reacting with the rear bearing 35. v39 denotes a plate in threaded engagement with theshaft 36 and which Aplate is provided with the angular end portionsl 40 engaged lwithin a trackway 41 whereby said plate is held against rotation around theshaft 36, so that upon requisite rotation of the shaft 36,'therplate 39 may be moved' as desiredv lengthwisevof the shaft 36.

`42 denotes a gravity pawl or dog having` its upper end portion pivotally engaged, as at 4 3, with the plate 3,9 and said dog or pawl42 is held against movementrin one direction past substantially a vertical center by the outstanding stop lug` 44 `carried, by the plate 39. The lower or free end portion of the dog or pawl 42 intersectsthe pathl of travel of the lug carried Vby the drum D, whereby the rotation of the drum D in one direction is limited yet permitting unhindered or unobstructed rotation of said drum D in the opposite direction.

To facilitate the maintenance of the drum D at its limit of rotation as afforded by the coacting lug 33 and pawl or-` dog 42, I arrange interiorly of the drum D the rolling weight 45 herein disclosed as an elongated cylindrical bar preferably .of metal and which has its end. portions engaging the inwardly disposed iiangesfa carried bythe spiders and between the inwardly disposed webs 46 comprised in the spiders.

Anchored by. the screws 47 or the like to the end flanges 1 of the base B are the'up-` standing end plates48 of requisite dimeiu sions and the forward margins of said plates atthe top thereof are provided with the downwardly. and forwardly inclined portions 49 defined by the inwardly disposed flanges 50. Secured to the flanges 50 by the screwsl or they like is an index member M.

fion of said rody3l is provided.

The rod 31 extends in advance of the index member M and its extended or outer end portion has secured thereto a head or knob 56 to facilitate the depression of said release rod. Adjacentends of the shaft 4 and the rod 23 extend outwardly of an `end plate 4S with the rod 23 terminating out ward'ly of the shaft 4. n

The outer end portion of the rod 23 has secured thereto a head or lknob 57 to facilitate the imposition of pressure on said rod and the extendedportion of the shaft 4l has keyed or' otherwise affixed thereto an operating wheely or disk 58, the periphery of which being knurled, said disk or wheel providing means to facilitate the requisite rotation of rthe shaft 4. The sleeve 5 extends through and outwardly of the second end kplate 48 and keyed or. otherwise affixed `to the exterior portion of the sleeve 5 is the 4operating wheel or disk 59, the periphery of which being also preferably .knurled The panel 53 is of a length substantially coextensive with the combined length of the drums D and D so that visual access may be had through the panel 53 to the indicia or characters arranged upon the peripheries of the drums D andD and the .band 11.

Adhesively secured to the inner or under face of the panel 53` are the opaque strips 60 of cardboard or the like and which extend entirely `from the left end of thel panel 53 to a point slightlyiinward of the inner end or margin ofthe d-rum D. The inner or opposed edges of the strips 60 are spaced apart to provide an `elongated and narrow sight lopening 61 through which is adapted to be exposed indicia or characters alined Vlongitudinally of the 4drum D. The major portionv of 'the panel 53 overlying the periphery of the drum D is unobstructed so that visual access may be had to the indicia or characters `above and below Vthe sight opening 61 in order to facilitate thc adjustment of the drum D to position the desired indication or characterization in register with the sight opening 61. :l

The opposed marginal portions of the strips 60 at the right ends thereof are continued to provide the restricted extensions (32 of a length to extend acrossthe indicia or characters upon the periphery ofthe drum D and the spacebetween said extensions 62 constitutes `a continuation of the sight opening 61.

`D.'sposed oircumferentially around drum D is a lamination 63 'preferably of paper and which has printed or otherwise produced thereon indications `or characterizations 64 equidistantlyspaced and arranged entirely around the drum D.` The indications or characterizations64, in the` present embodiment of my invent-iomare divided into twelve series, each series being identified as va month of the year and the indications orycharacterizations in each series being of a number equal to the number of days in the month said series represents so that the indications or characteriza-v tions 64 arethree hundred and sixty-five in` number or one for each day in a year with 4he exception of leap year. f i

fix-tending circumferentially around the annular baud il. is a laminat-ion 65 interthe Cit

sected at regular intervals by the transversely disposed lines 6G printed or otherwise imposed thereon and adjacent lines 00 are spaced apart a distance equal to the space iccuiiied -in` a circumferential direction by seven oiz adjacent indications or characterizations (34:. The transverse lines (5G are red or any other color dillerent trom the color oi' the indications or characterizations 04 and such lines 66 serve'to indicate the dates in anyY one oil? the months or in the year which tall upon Sunday. #when desired, additional transverse lines may be placed by the operator or other person upon the lamination 65 to indicatie what dates ot a month or in a year tall upon u legal holiday.

llxtending around the i'ieriphery ot the drum D is a lamination G7 prcteraliily ot paper and which is divided loi'ig'itudinally oi the drum D into a plurality of tields herein disclosed as 'tour in number and adjacent l'ields are separated by the circun'rlerentially disposed lines G8, red or any other desired color. The right marginal portion of the lamination 07 is provided with a narrow field on which is imprinted or otherwise provided a series ot characters 69 extendingY entirely around the drum D in a circumferential direction and which characters are numbered consecutively from l to 305, each indicating' the number oit a day in a year, and which characters are equidistantly spaced and also spaced apart in exacty accordance with the spacings of the indications or characterizations 64 hereinbefore referred to. i

The. strips 60 above and below the sight opening 6l are also divided into tields` coinciding' with the fields arranged on the lamination 6T carried by the drum D and adjacent fields on said strips 00 are separated by the vertically disposed lines 70, ot any desired color but preferably red, and

which lines substantially coincide with the lines 0S. 'Each oi the fields oil. the upper strip 00 along' its lower marginal portion is provided with a series ol. equidistantly spaced indications or characters 7l numbered in the thousands consecutively trom ci000 to .9000.7 lEach of the :fields of the. upper strip 60 is provided with interest or percent-age indications 72 herein disclosed as ranging' successively from 5% to 8%. The upper marginal portion of the lower strip (30 in cach ot" the lields in vertical alinemcnt with the indications or characters 7l is provided with the indications or characters 73 indicatingr the rate or percentage otl interest 'torthree hundred and sixty-tive days ot the amount directly thereabove as det-ermined by an indication 7l.

Each ot' the fields ot' the lamination (Si carried by the drum D is provided with nine longitudinally spaced and circlnnlerent-ially disposed indications or characterizations il, said indications or characterizations beingr equidistantly spaced with adjacent characterizations spaced apart similar to the characterizations 09. Each series oi indications or characterizations 7-1 consecutively indicates the, amount ot'interest ot its field for the days ot` a year in connection with the sum denoted by an indication 7l.

Initially the drums D and D are connected or clutched together for unitary movement. with the drum D at t-he limit of its movement in one direction as afforded by the eoacting' lug B8 and pawl or dog 42. livhen in rthis position, the day indication P305 as comprised in the series oi charactcrizations 09, together with the indications or characterizations T4- in alinement therewith in a direction longitudinally ot' the drum D, are exposed through the sight opening' 0l. The band 1l. is also adjusted to brine' a prime line tti in register with the date on the drum D ot the first Sunday in the year.

To compute the interest due on a note, press inwardly the rod 23 to discniragge the rods l0 'trom the drum D and then rotate said drum D through the instrumentality ol the wheel or disk 59 to bring' the. date when the note was made Yt'or exposure through the sight openingr 0l. Then release `the rod S23 which will result in the drums D and D being clutched or locked 'tor unitary movement. Then rotate the shat't l through the medium ot the wheel Aor disk 58 until the date on the drum D on which the note will he paid is exposed througl'i the sight opening This will result in an indication G0 beine' exposed through the sight openingy 6l giving the exact number of days the note has run. Then to the left of the year column will. be exposed the indications ist to the left ot the, indications 60 exposed tlu'oug'h the sight opening Gl will give the interest on amounts from $1000 to $9000 at 5%. 6%, 7% and 0%. the decimal point one place to the left; tor $21.10, move the decimal point two places to the lett. and tor l, move the decin'ial Apoint three places to the left.

lt is to be understood that when the drum D is rotated, the releasing rod 31 is depressed to release the brake shoe 27 from engagement or working contact with the hraketlang'e 20. lVhen the requisite adjustment. ot the drum D, together with the drum D. relative to the sight opening' 0l has heen eilected, pressure is removed from the releasing rod 3l, whereupon the brake shoe will automatically return intoengagcment or working` action upon the brake flange or wheel 20 so that said drums will be held in desired position in order to make thc requisite computation.` After the computation has been made, further depression otA the releasing' rod Si will result in the drum To p 'et the interest on $100, move i D automatically returning to its normal position or withl the day characterizaton 365 as comprised in the series of indications 69 returning to its normally exposed position through the sight opening 61 and Which automatic return or rotation of the drum I) is effected by the rolling Weight 45. It is also preferred that the directions :for employing my improved computing derice be printed or otherwise imposed upo the lower strip GO.

It is .also to be understood that at the end `ot a year, the band l1 is partially rotated relativeto the drum D to advance the prime transverse line 66 one day. It is alsoto be understood that in the event ot a leap year, after the month of February passes, this band 1l. is again adjusted to advance one day 'the prime line 66, so that the requisite indication of Sundays may be provided.

From the 'foregoing description it is thought to be obvious that a computing dcvice constructed in accordance with my invention is particularly ivell adapted for use by reason ot the convenience and ilacility with which it may be assembled and operated, and it will. also beobvieus that my invention is susceptible of some changeA and modification Without departing :trom the principles and spirit thereof and for this reason I do not wish to be understood as limiting myself te the precise arrangement and formation of the several parts herein shown in carrying out my invention in prac` tice except as hereinafter claimed.

I claim: f

l. A device oit the class 'described comprising'two drums arranged endto end and rotatable about a common axis, means tor normally locking said drums for unitary rotation, an index member common to both ot' the drums, a stop pin extending outwardly from an end oi one of the drums, a threaded shaft supported adjacent said pin, a plate in threaded engagement with the shaft,

Y means for holding the plate against rotation with the shaft, a dog pivotally engaged with the plate, and means for holding the uga dog against movement in one direction past substantially a vertical center, the stop ol the drum upon rotation of the drum in one direction engaging the dog to limit the rotation ot' the drum in rsuch direction, said drum having unhindered rotation by the p'aWl in the opposite direction.

2. A device ot' the class described compris ing a. tubular shaft, a drum carried thereby, a second drum positioned adjacent an end of the Iirst'named drum and supported for rotary movement, a clutch mechanism carried by the second named drum and coactin g with the first ira-med drum and normally engaging said irst named drum to cause both of the drums toV rotate in unison, and a rod movable Within the tubular shaft and coacting with the clutch mechanism to release the same from the first named drum.

A device of the class described including .a rotating element, a movable member supported adjacent said clement, means for imparting movement to said member in op? posite directions, a dog carried by said member and havingv limited movement in one di rection,l a part carried by the rotary element engageable with said dog upon rotation ot' said element in one direction to limit the extent of rotation of said element, said rotatable member including annular flanges placed longitudinally of its axis, and a rolling Weight having its end portions engaging said lianges for imparting movement to the rotating element to bring the part carried thereby into contact with the dov..

et. A device of the class described comprising two drums arranged end to end and rotatable about a commonv axis, means for normally locking said drums for unitary ro-A tation, means extendng axially ot' one of the drums to render the rst named means inoperative, an index member common to both o't' the drums, and means coacting with one ot' the drums for normally holding the same against rotary movement.

In testimony whereof I hereunto aiiix my signature.

ADOLPH I-I. C. I-IORNBOSTEL. 

